Document HPSBUX9610-040

Document Id: HPSBUX9610-040
Date Loaded: 10-30-96
Description: Vulnerability with incoming ICMP Echo Request (ping) packets
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HEWLETT-PACKARD SECURITY BULLETIN: #000040, 30 October 1996
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Hewlett-Packard recommends that the information in the following
Security Bulletin should be acted upon as soon as possible. Hewlett-
Packard will not be liable for any consequences to any customer resulting
from customer's failure to fully implement instructions in this Security
Bulletin as soon as possible.
Permission is granted for copying and circulating this bulletin to
Hewlett-Packard (HP) customers (or the Internet community) for the
purpose of alerting them to problems, if and only if, the bulletin is
not edited or changed in any way, is attributed to HP, and provided such
reproduction and/or distribution is performed for non-commercial
purposes.
Any other use of this information is prohibited. HP is not liable
for any misuse of this information by any third party.
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PROBLEM: Vulnerability with specific incoming ICMP Echo Request (ping)
packets.
PLATFORM: HP9000 Series 700 and 800 systems.
DAMAGE: Vulnerability makes it possible for an external user to
cause a system reboot.
SOLUTION: Apply the following patch:
Patch Name(Platform/OS) | Notes
--------------------------+----------------------------------
PHNE_9027 (s700 9.01) : PHNE_7704 must first be installed
PHNE_9028 (s700 9.03/5/7) : PHNE_7252 must first be installed
PHNE_9030 (s700 10.00) : No patch dependencies
PHNE_9032 (s700 10.01) : PHNE_8168 must first be installed
PHNE_9034 (s700 10.10) : PHNE_8063 must first be installed
PHNE_9036 (s700 10.20) : No patch dependencies
--------------------------+----------------------------------
PHNE_8672 (s800 9.00) : PHNE_7197 must first be installed
PHNE_9029 (s800 9.04) : PHNE_7317 must first be installed
PHNE_9031 (s800 10.00) : No patch dependencies
PHNE_9033 (s800 10.01) : PHNE_8169 must first be installed
PHNE_9035 (s800 10.10) : PHNE_8064 must first be installed
PHNE_9037 (s800 10.20) : No patch dependencies
--------------------------+----------------------------------
Due to the critical nature of this defect, HP is introducing
this as a non-cumulative patch. As a result, in cases where
a dependency exists, the current ARPA Transport cumulative
patch will need to be installed first. The two can be
installed in the same session to minimize system downtime,
but the prerequisite patch must be loaded first.
Installation will fail if this is not the case.
AVAILABILITY: All patches are available now.
_______________________________________________________________________
I. Update
A. Problem description
A recent mailing list disclosure described a vulnerability in which
specific, illegally formatted, incoming ICMP Echo Request (ping)
traffic could cause a system reboot on some HP9000 Series 700,
and 800 systems running HP-UX releases 9.X and 10.X. HP9000 Series
300 and 400 systems have not been found to be vulnerable.
B. Fixing the problem
The vulnerability can be eliminated from HP-UX releases 9.X and 10.X
by applying either one or two patches.
C. How to Install the Patch:
1. Determine which patch(es) are appropriate for your hardware
platform and operating system.
2. Hewlett-Packard's HP-UX patches are available via email
and the World Wide Web
To obtain a copy of the Hewlett-Packard SupportLine email
service user's guide, send the following in the TEXT PORTION
OF THE MESSAGE to support@us.external.hp.com (no Subject
is required):
send guide
The users guide explains the HP-UX patch downloading process
via email and other services available.
World Wide Web service for downloading of patches
is available via our URL:
(http://us.external.hp.com)
3. Apply the patch(es) to your HP-UX system. In cases where
a dependency exists, the current ARPA Transport cumulative
patch will need to be installed first. The two can be
installed in the same session to minimize system downtime,
but the prerequisite patch must be loaded first. Installation
will fail if this is not the case.
4. Examine /tmp/update.log (9.X), or /var/adm/sw/swinstall.log
(10.X), for any relevant WARNINGs or ERRORs.
D. Impact
The patches for HP-UX releases 9.X and 10.X provide enhancements
in the ARPA Transport stack to avoid this vulnerability.
E. HP SupportLine
To subscribe to automatically receive future NEW HP Security
Bulletins from the HP SupportLine mail service via electronic mail,
send an email message to:
support@us.external.hp.com (no Subject is required)
Multiple instructions are allowed in the TEXT PORTION OF THE MESSAGE,
here are some basic instructions you may want to use:
To add your name to the subscription list for new security bulletins,
send the following in the TEXT PORTION OF THE MESSAGE:
subscribe security_info
To retrieve the index of all HP Security Bulletins issued to date,
send the following in the TEXT PORTION OF THE MESSAGE:
send security_info_list
To get a patch matrix of current HP-UX and BLS security patches
referenced by either Security Bulletin or Platform/OS, put the
following in the text portion of your message:
send hp-ux_patch_matrix
World Wide Web service for browsing of bulletins is available via
our URL:
http://us.external.hp.com
Choose "Support news", then under Support news,
choose "Security Bulletins"
F. To report new security vulnerabilities, send email to
security-alert@hp.com
Please encrypt exploit information using the security-alert PGP
key, available from your local key server, or by sending a
message with a -subject- (not body) of 'get key' (no quotes) to
security-alert@hp.com
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